Forums changes

Last week we introduced two new forums, since then we've been working
on new features and functionality for the discussion forums. First of
which (implemented today) is recording your last visit date on a per forum
basis. In the past there was always a possibility of missing messages
posted on other forums if you didn't visit them all in one session, now
last visit is recorded invidually for each forum.

A concequence of this is that existing users may find forums showing
[NEW] which don't have, this will clear itself as you visit each forum
in turn, alternatively you can clean out your browser cache (and cookies).

We've also introduced a new forum named "Open Talk" to all
those people missing the old Digital Cameras forum...